From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Ada grammar rules for names too permissive? Date: Tue, 1 Jan 2019 21:42:30 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <30ba8954-a19e-4c95-b350-798b0276db41@googlegroups.com> <38103aef-2528-41ae-bb29-eec551a64808@googlegroups.com> NNTP-Posting-Host: i065DRYuysvTI4qVnaNkyg.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.3 Xref: reader01.eternal-september.org comp.lang.ada:55156 Date: 2019-01-01T21:42:30+01:00 List-Id: On 2019-01-01 20:49, Stephen Leake wrote: > On Tuesday, January 1, 2019 at 12:44:17 AM UTC-8, Dmitry A. Kazakov wrote: >> The grammar as written is never the one actually used for whatever >> purpose other than explanation or, maybe, validation. An extreme case >> illustrating why, is source code coloring, > > On the contrary, Emacs Ada mode source code coloring uses a generated parser for the Ada language, with only minimal changes from Annex P. In which case it should not work with syntactically incorrect programs. The grammar describing a reasonably good color schema and the grammar describing syntactically correct Ada programs must be sufficiently different. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de